Hello,
Did you ever receive a response to your posting? If not, I would be happy to provide you with the information I have. I am descended from Christiana Jones and William Samuel Fredrick through their only child, Mary Ellen Fredrick. I am in contact individuals descended from his other wives so there is quite a bit of info.
If you have received info, did you attend any of the Fredrick family reunions in St. Jo, Texas? I was at one 3 years ago, lots of cousins were there! If you were there we probably met, but with so many I don't remember all the names.